Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1981-05-26
1984-03-06
Anagnos, Larry N.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307304, H03K 17693, H03K 1730
Patent
active
044356528
ABSTRACT:
A threshold voltage control circuit controls the threshold voltages of one or more field-effect transistors (FETs) of an integrated circuit. The threshold voltage control circuit includes a reference (FET) which is electrically connected to the other FETs so that the threshold voltage of the reference FET determines the threshold voltages of the other FETs. A bias voltage is applied to a gate of the reference FET and a current path is established between first and second supply terminals. This current path includes the drain and source of the reference FET. The current flowing in the current path is a function of the bias voltage applied to the gate of the reference FET and the threshold voltage of the reference FET. A high gain, high input impedance amplifier is connected to the current path and provides a threshold control signal to the reference FET (and the other FETs) which is a function of the current in the current path. The threshold control signal causes the threshold voltage of the reference FET to attain a value which maintains a predetermined current flow in the current path.
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Anagnos Larry N.
Fairbairn David R.
Honeywell Inc.
Hudspeth David R.
Neils Theodore F.
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